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CANNA CalMag Agent Liquid Concentrate




CANNA’s CalMag Agent is a calcium and magnesium supplement formulated to work with varying types of water such as reverse osmosis water systems. This liquid concentrate stabilizes pH and hardens water while preserving the ratio and quality of nutrients in the reservoir for strong healthy plants. CalMag Agent works best with CANNA COCO substrate and pairs well with CANNA’s line of hydroponic nutrients.

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CANNA CalMag Agent Liquid Concentrate

In order to work with varying types of water, we designed CANNA CALMAG, a balanced water conditioner, and treatment.

CANNA CALMAG AGENT is a calcium and magnesium mineral nutrient designed to improve water quality for calcium-sensitive systems, specifically when using reverse osmosis water with a coco medium. Our CANNA CALMAG AGENT increases water hardness, without disrupting the balance of nutrient ratios within the system, and preserves nutrient quality while in the nutrient reservoir.


  • Prevents deficiencies in calcium and magnesium
  • Increases water hardness
  • Stabilizes water pH over time
  • Perfected for use on CANNA COCO substrate
  • Maintains optimal nutrient quality in the nutrient reservoir
  • Stronger, healthier plants
  • Promotes better quality flowers


  1. Fill the nutrient reservoir with water at room temperature (64-72 °F).
  2. Add nutrients and additives to be used such as CANNA COCOCANNABOOSTRHIZOTONICCANNAZYM, and PK13/14, mixing between each addition. Adjust your EC as needed. Make pH adjustments as needed.
  3. Add 2 – 4 ml/gal (5 – 10 ml/10 liters) of CALMAG AGENT, depending on your water quality and target plant.
  4. Wait 24-48 hours to do additional pH adjustments, because the solution naturally drops and then rises in pH during this time. Keep in mind that a stable pH is also temperature dependent.


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